In reply to a post by yarwell:

ping www.bbc.co.uk -t then Ctrl/c to stop it after 5 minutes and get the numbers.

wireless probably works in safe mode, try it and see

http://www.dslreports.com/tweaks/ - run the test and post the tiny url from the bottom of the page.

You've gone from fastpath to interleaved, has the sync speed stayed the same ? You see more FEC errors with interleaving 'cos it has more data to correct them.

The highest the connection rate acheived on fast was 13936 kpbs now on 14974 kpbs interleaved, but errors notably higher. It did reach 15942 kpbs but I had to reset the router thanks to BT FON playing havoc with my wireless connection. Whilst my rate might increase again, I am not expecting any major changes to throughput speeds.

I am not expecting any major changes to throughput speeds.

you won't on XP unless you increase the RWIN value.

before it was:

IP Profile 13000
Synch rate 15439 kbps

what now ?

Useless posting router stats w/out Connection Speeds

In reply to a post by yarwell:

before it was:

IP Profile 13000
Synch rate 15439 kbps

what now ?

As stated above and unchanged

Line state Connected
Connection time 2 days, 2:17:20
Downstream 14,974 Kbps
Upstream 1,064 Kbps


ADSL settings
VPI/VCI 0/38
Type PPPoA
Modulation ITU-T G.992.5
Latency type Interleaved
Noise margin (Down/Up) 6.2 dB / 5.6 dB
Line attenuation (Down/Up) 22.5 dB / 11.5 dB
Output power (Down/Up) 21.0 dBm / 12.4 dBm
Loss of Framing (Local) 0
Loss of Signal (Local) 0
Loss of Power (Local) 0
FEC Errors (Down/Up) 0 / 1646
CRC Errors (Down/Up) 890 / 2147480000
HEC Errors (Down/Up) nil / 32423
Error Seconds (Local) 548

In reply to a post by yarwell:

I am not expecting any major changes to throughput speeds.

you won't on XP unless you increase the RWIN value.

I have run the DSL Tweak tester again and it seems that Windows Dynamic management is working
http://www.dslreports.com/tweakr/block:491357?servic...
I note that BT run on PPPoA Enscapulation so just in case I have done a second test

http://www.dslreports.com/tweakr/block:491357?servic...
So basically my MTU should be 1470 and RWIN 256960?

As not stated above and the following appended:

In reply to a post by Tuliptownman:

Line state Connected
Connection time 2 days, 2:17:20
Downstream 14,974 Kbps
Upstream 1,064 Kbps

1500 MTU - easiest to stick at the default.

Was that the same PC as last time on the same network connection ? XP doesn't resize RWIN AFAIK and it's adapter specific.

To be honest, if I saw those stats from your router, I would say replace it. Upstream errors are almost always faulty wiring or equipment, and if those stats are accurate, you are sending a lot of upstream errors, which isn't going to help anything. It may also explain the poor wireless performance, but it is a bit of a tenuous link, but may be indicative of a router on its way out.

If you have a spare router, try that, easiest way to find out

To be certain, phone your ISP, and ask them to run a diagnostic. If they are vaguely competent, they'll be able to see the errors themselves, and can advise you accordingly.

In reply to a post by XRaySpeX:

As not stated above and the following appended:

In reply to a post by Tuliptownman:

Line state Connected
Connection time 2 days, 2:17:20
Downstream 14,974 Kbps
Upstream 1,064 Kbps

It is

The highest the connection rate acheived on fast was 13936 kpbs now on 14974 kpbs interleaved, but errors notably higher. It did reach 15942 kpbs but I had to reset the router thanks to BT FON playing havoc with my wireless connection. Whilst my rate might increase again, I am not expecting any major changes to throughput speeds.

Ok I'll grant that the upstream speeds aren't but no one has upstream speeds to write home about due to the physical limits. Sometimes I wish they could be quicker when sending emails with large attachments.